Stonehenge Apocalypse

When a disgraced scientist discovers unusual spikes in the Earth's electromagnetic field emanating from Stonehenge, it is up to him to warn the world of a possible apocalypse. But while his claims are being disregarded by his peers, the ancient structure begins to move independently, building up an electromagnetic charge and releasing enough energy to vaporize people within a certain radius. Can he convince the military and his peers of his findings before it is too late and all life on Earth is destroyed?